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The amount of snow received at weather stations varies substantially from year to year. For example, the annual snowfall at Paradise Ranger Station in Mount Rainier National Park has been as little as 266 inches (680 cm) in 2014-2015 and as much as 1,122 inches (2,850 cm) in 1971–1972.
In Southern California, the temperature differences are approximately 4 °F in winter and 23 °F (2 °C and 13 °C) in summer. At the coast in Santa Monica , the average high in August is 75 °F (24 °C), while in Burbank , approximately 10 miles (16 km) inland, the average high in August is 95 °F (35 °C): a temperature gain of about two ...
Over the course of time, a snowpack may settle under its own weight until its density is approximately 30% of water. Increases in density above this initial compression occur primarily by melting and refreezing, caused by temperatures above freezing or by direct solar radiation. In colder climates, snow lies on the ground all winter.
The state's snow water equivalent — or the amount of water contained in the snow — was 226% of normal on Wednesday, marking a high for the date not seen in at least two decades.
Parts of Highway 89 through Lassen Volcanic National Park in California were shut down after an estimated 3 inches (7.6 centimeters) of snow fell overnight, according to the National Weather Service.
Snow levels this low are below the passes along Interstates 5, 8 and 15, which can result in treacherous travel from later Sunday night through Monday night.
The summer temperature pattern usually begins in late June or early July, and lasts through September or October, although it may start as early as late May. In August, the average high/low at the University of Southern California downtown campus are 84.8 °F (29.3 °C) and 65.6 °F (18.7 °C).
At the peak of the storm, some locations — like Donner Pass in California and Lake Tahoe on the California-Nevada border — could experience snowfall rates of 1 to 2 inches per hour and ...